/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:40:43,910 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:40:43,913 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:40:43,966 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:40:43,967 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:40:43,971 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:40:43,975 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:40:43,983 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:40:43,987 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:40:43,994 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:40:43,995 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:40:43,997 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:40:43,997 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:40:44,000 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:40:44,002 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:40:44,004 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:40:44,005 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:40:44,008 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:40:44,019 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:40:44,025 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:40:44,029 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:40:44,032 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:40:44,033 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:40:44,034 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:40:44,037 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 20:40:44,037 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 20:40:44,037 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 20:40:44,038 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 20:40:44,039 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 20:40:44,040 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 20:40:44,040 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 20:40:44,041 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 20:40:44,042 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 20:40:44,042 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 20:40:44,044 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 20:40:44,044 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 20:40:44,044 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 20:40:44,045 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 20:40:44,045 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:40:44,046 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:40:44,047 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:40:44,048 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 20:40:44,060 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:40:44,060 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:40:44,061 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:40:44,062 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:40:44,062 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:40:44,062 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:40:44,062 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:40:44,062 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:40:44,063 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:40:44,063 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:40:44,063 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:40:44,063 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:40:44,063 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:40:44,064 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:40:44,064 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:40:44,064 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:40:44,064 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:40:44,064 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:40:44,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:40:44,065 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:40:44,065 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:40:44,065 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:40:44,065 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:40:44,429 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:40:44,466 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:40:44,469 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:40:44,471 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:40:44,471 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:40:44,472 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i [2020-10-23 20:40:44,561 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31abd5ff2/ec8aa4d115f44da9b0aefe89b67a9615/FLAG5e260c78f [2020-10-23 20:40:45,277 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:40:45,278 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i [2020-10-23 20:40:45,304 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31abd5ff2/ec8aa4d115f44da9b0aefe89b67a9615/FLAG5e260c78f [2020-10-23 20:40:45,542 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31abd5ff2/ec8aa4d115f44da9b0aefe89b67a9615 [2020-10-23 20:40:45,546 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:40:45,553 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:40:45,555 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:40:45,555 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:40:45,559 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:40:45,560 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:40:45" (1/1) ... [2020-10-23 20:40:45,563 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49b57b2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:45, skipping insertion in model container [2020-10-23 20:40:45,563 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:40:45" (1/1) ... [2020-10-23 20:40:45,572 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:40:45,612 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:40:45,962 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:40:45,972 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:40:46,022 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:40:46,094 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:40:46,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:46 WrapperNode [2020-10-23 20:40:46,095 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:40:46,096 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:40:46,097 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:40:46,097 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:40:46,110 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:46" (1/1) ... [2020-10-23 20:40:46,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:46" (1/1) ... [2020-10-23 20:40:46,128 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:46" (1/1) ... [2020-10-23 20:40:46,129 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:46" (1/1) ... [2020-10-23 20:40:46,151 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:46" (1/1) ... [2020-10-23 20:40:46,158 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:46" (1/1) ... [2020-10-23 20:40:46,163 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:46" (1/1) ... [2020-10-23 20:40:46,170 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:40:46,172 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:40:46,172 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:40:46,172 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:40:46,173 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:40:46,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:40:46,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:40:46,281 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:40:46,281 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-23 20:40:46,282 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-23 20:40:46,282 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-23 20:40:46,282 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-10-23 20:40:46,282 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2020-10-23 20:40:46,282 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-10-23 20:40:46,282 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_insert [2020-10-23 20:40:46,283 INFO L138 BoogieDeclarations]: Found implementation of procedure _get_nondet_int [2020-10-23 20:40:46,283 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:40:46,283 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:40:46,283 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:40:46,283 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-23 20:40:46,283 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-23 20:40:46,284 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:40:46,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:40:46,284 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 20:40:46,284 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-23 20:40:46,284 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-23 20:40:46,285 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-23 20:40:46,285 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-23 20:40:46,285 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-23 20:40:46,285 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-23 20:40:46,285 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-23 20:40:46,285 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-23 20:40:46,286 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-23 20:40:46,286 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-23 20:40:46,286 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-23 20:40:46,286 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-23 20:40:46,286 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-23 20:40:46,287 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-23 20:40:46,287 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-23 20:40:46,287 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-23 20:40:46,287 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-23 20:40:46,287 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-23 20:40:46,287 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-23 20:40:46,287 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-23 20:40:46,288 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-23 20:40:46,288 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-23 20:40:46,288 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-23 20:40:46,288 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-23 20:40:46,288 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-23 20:40:46,288 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-23 20:40:46,288 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-23 20:40:46,289 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-23 20:40:46,289 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-23 20:40:46,289 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-23 20:40:46,289 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-23 20:40:46,289 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-23 20:40:46,289 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-23 20:40:46,290 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-23 20:40:46,290 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-23 20:40:46,290 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-23 20:40:46,290 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-23 20:40:46,290 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-23 20:40:46,290 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-23 20:40:46,290 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-23 20:40:46,291 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-23 20:40:46,291 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-23 20:40:46,291 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-23 20:40:46,291 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-23 20:40:46,291 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-23 20:40:46,291 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-23 20:40:46,292 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-23 20:40:46,292 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-23 20:40:46,292 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-23 20:40:46,292 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-23 20:40:46,292 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-23 20:40:46,292 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-23 20:40:46,292 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 20:40:46,293 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-23 20:40:46,293 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-23 20:40:46,293 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 20:40:46,293 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-23 20:40:46,293 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-23 20:40:46,293 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-23 20:40:46,294 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-23 20:40:46,294 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-23 20:40:46,294 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-23 20:40:46,294 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-23 20:40:46,294 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-23 20:40:46,294 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-23 20:40:46,295 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-23 20:40:46,295 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-23 20:40:46,295 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-23 20:40:46,295 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-23 20:40:46,295 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-23 20:40:46,295 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-23 20:40:46,296 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-23 20:40:46,296 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-23 20:40:46,296 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-23 20:40:46,296 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-23 20:40:46,296 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-23 20:40:46,296 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-23 20:40:46,296 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-23 20:40:46,297 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-23 20:40:46,297 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-23 20:40:46,297 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-23 20:40:46,297 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-23 20:40:46,297 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-23 20:40:46,297 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-23 20:40:46,298 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-23 20:40:46,298 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-23 20:40:46,298 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-23 20:40:46,298 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-23 20:40:46,298 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-23 20:40:46,298 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-23 20:40:46,298 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-23 20:40:46,299 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-23 20:40:46,299 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-23 20:40:46,299 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-23 20:40:46,299 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-23 20:40:46,299 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-23 20:40:46,299 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-23 20:40:46,299 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-23 20:40:46,300 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-23 20:40:46,300 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-23 20:40:46,300 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-23 20:40:46,300 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-23 20:40:46,300 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-23 20:40:46,300 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-23 20:40:46,301 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-23 20:40:46,301 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-10-23 20:40:46,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 20:40:46,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 20:40:46,301 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2020-10-23 20:40:46,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 20:40:46,301 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-10-23 20:40:46,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:40:46,302 INFO L130 BoogieDeclarations]: Found specification of procedure sll_insert [2020-10-23 20:40:46,302 INFO L130 BoogieDeclarations]: Found specification of procedure _get_nondet_int [2020-10-23 20:40:46,302 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:40:46,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-23 20:40:46,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:40:46,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:40:46,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:40:46,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:40:46,303 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:40:46,846 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-23 20:40:47,212 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:40:47,212 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-23 20:40:47,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:40:47 BoogieIcfgContainer [2020-10-23 20:40:47,214 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:40:47,216 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:40:47,216 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:40:47,220 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:40:47,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:40:45" (1/3) ... [2020-10-23 20:40:47,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e12f74a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:40:47, skipping insertion in model container [2020-10-23 20:40:47,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:46" (2/3) ... [2020-10-23 20:40:47,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e12f74a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:40:47, skipping insertion in model container [2020-10-23 20:40:47,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:40:47" (3/3) ... [2020-10-23 20:40:47,241 INFO L111 eAbstractionObserver]: Analyzing ICFG sll_nondet_insert-1.i [2020-10-23 20:40:47,254 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:40:47,261 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 20:40:47,276 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 20:40:47,315 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:40:47,315 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:40:47,316 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:40:47,316 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:40:47,316 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:40:47,316 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:40:47,316 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:40:47,317 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:40:47,344 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states. [2020-10-23 20:40:47,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-23 20:40:47,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:40:47,367 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:40:47,367 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:40:47,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:40:47,376 INFO L82 PathProgramCache]: Analyzing trace with hash -343766679, now seen corresponding path program 1 times [2020-10-23 20:40:47,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:40:47,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [141092236] [2020-10-23 20:40:47,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:40:47,481 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:40:47,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:40:47,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:40:47,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:40:47,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-23 20:40:47,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:40:47,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-23 20:40:47,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:40:47,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-23 20:40:47,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:40:47,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-23 20:40:47,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:40:47,725 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-23 20:40:47,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [141092236] [2020-10-23 20:40:47,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:40:47,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:40:47,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010019950] [2020-10-23 20:40:47,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:40:47,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:40:47,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:40:47,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:40:47,752 INFO L87 Difference]: Start difference. First operand 152 states. Second operand 4 states. [2020-10-23 20:40:48,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:40:48,194 INFO L93 Difference]: Finished difference Result 301 states and 352 transitions. [2020-10-23 20:40:48,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 20:40:48,196 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-10-23 20:40:48,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:40:48,208 INFO L225 Difference]: With dead ends: 301 [2020-10-23 20:40:48,208 INFO L226 Difference]: Without dead ends: 129 [2020-10-23 20:40:48,213 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 20:40:48,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-23 20:40:48,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 120. [2020-10-23 20:40:48,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-23 20:40:48,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 129 transitions. [2020-10-23 20:40:48,280 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 129 transitions. Word has length 60 [2020-10-23 20:40:48,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:40:48,280 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 129 transitions. [2020-10-23 20:40:48,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:40:48,280 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 129 transitions. [2020-10-23 20:40:48,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-23 20:40:48,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:40:48,285 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:40:48,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:40:48,286 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:40:48,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:40:48,286 INFO L82 PathProgramCache]: Analyzing trace with hash 2216446, now seen corresponding path program 1 times [2020-10-23 20:40:48,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:40:48,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [106949914] [2020-10-23 20:40:48,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:40:48,309 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:40:48,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:40:48,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:40:48,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:40:48,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-23 20:40:48,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:40:48,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-23 20:40:48,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:40:48,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-23 20:40:48,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:40:48,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-23 20:40:48,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:40:48,771 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-23 20:40:48,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [106949914] [2020-10-23 20:40:48,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:40:48,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-23 20:40:48,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102112661] [2020-10-23 20:40:48,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-23 20:40:48,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:40:48,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-23 20:40:48,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-23 20:40:48,775 INFO L87 Difference]: Start difference. First operand 120 states and 129 transitions. Second operand 14 states. [2020-10-23 20:40:49,111 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-10-23 20:40:49,372 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-10-23 20:40:49,501 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-10-23 20:40:50,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:40:50,679 INFO L93 Difference]: Finished difference Result 283 states and 309 transitions. [2020-10-23 20:40:50,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-23 20:40:50,680 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 75 [2020-10-23 20:40:50,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:40:50,683 INFO L225 Difference]: With dead ends: 283 [2020-10-23 20:40:50,683 INFO L226 Difference]: Without dead ends: 175 [2020-10-23 20:40:50,686 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=163, Invalid=649, Unknown=0, NotChecked=0, Total=812 [2020-10-23 20:40:50,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-23 20:40:50,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 140. [2020-10-23 20:40:50,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-23 20:40:50,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 151 transitions. [2020-10-23 20:40:50,720 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 151 transitions. Word has length 75 [2020-10-23 20:40:50,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:40:50,720 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 151 transitions. [2020-10-23 20:40:50,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-23 20:40:50,721 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 151 transitions. [2020-10-23 20:40:50,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-23 20:40:50,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:40:50,724 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:40:50,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:40:50,724 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:40:50,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:40:50,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1822744123, now seen corresponding path program 1 times [2020-10-23 20:40:50,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:40:50,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195732340] [2020-10-23 20:40:50,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:40:50,731 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:40:50,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:40:50,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:40:50,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:40:50,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-23 20:40:50,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:40:50,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-23 20:40:50,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:40:50,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-23 20:40:50,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:40:50,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-23 20:40:50,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:40:51,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:40:51,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195732340] [2020-10-23 20:40:51,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:40:51,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-23 20:40:51,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290746922] [2020-10-23 20:40:51,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-23 20:40:51,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:40:51,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-23 20:40:51,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-23 20:40:51,032 INFO L87 Difference]: Start difference. First operand 140 states and 151 transitions. Second operand 12 states. [2020-10-23 20:40:52,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:40:52,514 INFO L93 Difference]: Finished difference Result 320 states and 356 transitions. [2020-10-23 20:40:52,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-23 20:40:52,515 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 77 [2020-10-23 20:40:52,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:40:52,523 INFO L225 Difference]: With dead ends: 320 [2020-10-23 20:40:52,523 INFO L226 Difference]: Without dead ends: 211 [2020-10-23 20:40:52,529 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=123, Invalid=527, Unknown=0, NotChecked=0, Total=650 [2020-10-23 20:40:52,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-10-23 20:40:52,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 160. [2020-10-23 20:40:52,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-23 20:40:52,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 173 transitions. [2020-10-23 20:40:52,598 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 173 transitions. Word has length 77 [2020-10-23 20:40:52,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:40:52,600 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 173 transitions. [2020-10-23 20:40:52,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-23 20:40:52,601 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 173 transitions. [2020-10-23 20:40:52,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-23 20:40:52,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:40:52,610 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:40:52,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 20:40:52,611 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:40:52,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:40:52,612 INFO L82 PathProgramCache]: Analyzing trace with hash 2138556837, now seen corresponding path program 1 times [2020-10-23 20:40:52,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:40:52,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1953864548] [2020-10-23 20:40:52,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:40:52,874 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:40:52,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:40:52,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:40:52,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:40:53,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-23 20:40:53,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:40:53,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 20:40:53,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:40:53,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-23 20:40:53,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:40:53,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-23 20:40:53,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:40:53,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:40:53,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1953864548] [2020-10-23 20:40:53,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:40:53,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 20:40:53,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997952544] [2020-10-23 20:40:53,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 20:40:53,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:40:53,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 20:40:53,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-23 20:40:53,360 INFO L87 Difference]: Start difference. First operand 160 states and 173 transitions. Second operand 11 states. [2020-10-23 20:40:53,881 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2020-10-23 20:40:54,039 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-10-23 20:40:54,284 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2020-10-23 20:40:54,862 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2020-10-23 20:40:54,999 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2020-10-23 20:40:55,170 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-10-23 20:40:55,338 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2020-10-23 20:40:55,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:40:55,614 INFO L93 Difference]: Finished difference Result 350 states and 383 transitions. [2020-10-23 20:40:55,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-23 20:40:55,615 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 85 [2020-10-23 20:40:55,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:40:55,622 INFO L225 Difference]: With dead ends: 350 [2020-10-23 20:40:55,622 INFO L226 Difference]: Without dead ends: 210 [2020-10-23 20:40:55,624 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=224, Invalid=478, Unknown=0, NotChecked=0, Total=702 [2020-10-23 20:40:55,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-23 20:40:55,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 167. [2020-10-23 20:40:55,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-23 20:40:55,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 180 transitions. [2020-10-23 20:40:55,668 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 180 transitions. Word has length 85 [2020-10-23 20:40:55,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:40:55,668 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 180 transitions. [2020-10-23 20:40:55,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 20:40:55,668 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 180 transitions. [2020-10-23 20:40:55,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-23 20:40:55,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:40:55,671 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:40:55,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 20:40:55,671 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:40:55,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:40:55,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1514211171, now seen corresponding path program 1 times [2020-10-23 20:40:55,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:40:55,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [584000940] [2020-10-23 20:40:55,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:40:55,958 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-23 20:40:56,172 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:40:56,173 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:40:56,174 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:40:56,174 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:40:56,175 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:40:56,175 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:40:56,176 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:40:56,176 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:40:56,177 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:40:56,177 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:40:56,178 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:40:56,184 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:40:56,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:40:56,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:40:56,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:40:56,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-23 20:40:56,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:40:56,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-23 20:40:56,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:40:56,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-23 20:40:56,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:40:56,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-23 20:40:56,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:40:56,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:40:56,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [584000940] [2020-10-23 20:40:56,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:40:56,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-23 20:40:56,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521354853] [2020-10-23 20:40:56,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-23 20:40:56,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:40:56,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-23 20:40:56,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-23 20:40:56,461 INFO L87 Difference]: Start difference. First operand 167 states and 180 transitions. Second operand 13 states. [2020-10-23 20:40:57,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:40:57,459 INFO L93 Difference]: Finished difference Result 218 states and 238 transitions. [2020-10-23 20:40:57,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-23 20:40:57,460 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 86 [2020-10-23 20:40:57,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:40:57,462 INFO L225 Difference]: With dead ends: 218 [2020-10-23 20:40:57,463 INFO L226 Difference]: Without dead ends: 210 [2020-10-23 20:40:57,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2020-10-23 20:40:57,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-23 20:40:57,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 187. [2020-10-23 20:40:57,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-10-23 20:40:57,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 205 transitions. [2020-10-23 20:40:57,496 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 205 transitions. Word has length 86 [2020-10-23 20:40:57,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:40:57,497 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 205 transitions. [2020-10-23 20:40:57,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-23 20:40:57,497 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 205 transitions. [2020-10-23 20:40:57,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-23 20:40:57,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:40:57,499 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:40:57,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-23 20:40:57,499 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:40:57,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:40:57,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1851492386, now seen corresponding path program 2 times [2020-10-23 20:40:57,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:40:57,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136161418] [2020-10-23 20:40:57,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:40:57,914 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:40:57,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:40:57,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:40:57,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:40:57,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-23 20:40:57,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:40:58,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-23 20:40:58,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:40:58,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-23 20:40:58,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:40:58,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-23 20:40:58,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:40:58,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:40:58,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136161418] [2020-10-23 20:40:58,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:40:58,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-23 20:40:58,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736085222] [2020-10-23 20:40:58,209 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-23 20:40:58,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:40:58,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-23 20:40:58,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-23 20:40:58,210 INFO L87 Difference]: Start difference. First operand 187 states and 205 transitions. Second operand 14 states. [2020-10-23 20:41:00,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:41:00,252 INFO L93 Difference]: Finished difference Result 328 states and 368 transitions. [2020-10-23 20:41:00,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-23 20:41:00,254 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 87 [2020-10-23 20:41:00,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:41:00,257 INFO L225 Difference]: With dead ends: 328 [2020-10-23 20:41:00,257 INFO L226 Difference]: Without dead ends: 232 [2020-10-23 20:41:00,259 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=172, Invalid=820, Unknown=0, NotChecked=0, Total=992 [2020-10-23 20:41:00,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-10-23 20:41:00,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 166. [2020-10-23 20:41:00,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-23 20:41:00,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 181 transitions. [2020-10-23 20:41:00,304 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 181 transitions. Word has length 87 [2020-10-23 20:41:00,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:41:00,304 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 181 transitions. [2020-10-23 20:41:00,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-23 20:41:00,305 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 181 transitions. [2020-10-23 20:41:00,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-23 20:41:00,306 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:41:00,306 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:41:00,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-23 20:41:00,306 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:41:00,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:41:00,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1512142798, now seen corresponding path program 1 times [2020-10-23 20:41:00,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:41:00,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [481950440] [2020-10-23 20:41:00,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:41:00,420 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2020-10-23 20:41:00,575 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-23 20:41:00,750 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-23 20:41:00,807 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:00,808 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:00,809 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:00,809 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:00,810 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:00,811 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:00,811 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:00,812 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:00,812 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:00,813 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:00,814 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:00,851 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:00,855 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:41:00,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:41:00,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:41:00,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:41:00,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-23 20:41:00,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:41:01,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-23 20:41:01,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:41:01,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-23 20:41:01,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:41:01,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-23 20:41:01,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:41:01,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:41:01,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [481950440] [2020-10-23 20:41:01,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:41:01,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-23 20:41:01,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753160926] [2020-10-23 20:41:01,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-23 20:41:01,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:41:01,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-23 20:41:01,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-23 20:41:01,168 INFO L87 Difference]: Start difference. First operand 166 states and 181 transitions. Second operand 14 states. [2020-10-23 20:41:02,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:41:02,771 INFO L93 Difference]: Finished difference Result 345 states and 389 transitions. [2020-10-23 20:41:02,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-23 20:41:02,776 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 93 [2020-10-23 20:41:02,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:41:02,778 INFO L225 Difference]: With dead ends: 345 [2020-10-23 20:41:02,778 INFO L226 Difference]: Without dead ends: 244 [2020-10-23 20:41:02,780 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=138, Invalid=674, Unknown=0, NotChecked=0, Total=812 [2020-10-23 20:41:02,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-10-23 20:41:02,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 189. [2020-10-23 20:41:02,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-10-23 20:41:02,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 206 transitions. [2020-10-23 20:41:02,814 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 206 transitions. Word has length 93 [2020-10-23 20:41:02,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:41:02,815 INFO L481 AbstractCegarLoop]: Abstraction has 189 states and 206 transitions. [2020-10-23 20:41:02,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-23 20:41:02,815 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 206 transitions. [2020-10-23 20:41:02,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-23 20:41:02,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:41:02,816 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:41:02,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-23 20:41:02,817 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:41:02,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:41:02,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1087278640, now seen corresponding path program 2 times [2020-10-23 20:41:02,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:41:02,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [137041984] [2020-10-23 20:41:02,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:41:03,061 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2020-10-23 20:41:03,235 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-23 20:41:03,411 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-23 20:41:03,592 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-23 20:41:03,762 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-23 20:41:04,062 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-23 20:41:04,227 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2020-10-23 20:41:04,282 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:04,283 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:04,285 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:04,285 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:04,286 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:04,287 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:04,287 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:04,288 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:04,289 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:04,289 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:04,290 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:04,331 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:04,334 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:41:04,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:41:04,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:41:04,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:41:04,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-23 20:41:04,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:41:04,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-23 20:41:04,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:41:04,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-23 20:41:04,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:41:04,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-23 20:41:04,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:41:04,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:41:04,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [137041984] [2020-10-23 20:41:04,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:41:04,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-23 20:41:04,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759566380] [2020-10-23 20:41:04,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-23 20:41:04,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:41:04,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-23 20:41:04,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-23 20:41:04,690 INFO L87 Difference]: Start difference. First operand 189 states and 206 transitions. Second operand 18 states. [2020-10-23 20:41:06,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:41:06,505 INFO L93 Difference]: Finished difference Result 246 states and 271 transitions. [2020-10-23 20:41:06,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-23 20:41:06,506 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 102 [2020-10-23 20:41:06,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:41:06,509 INFO L225 Difference]: With dead ends: 246 [2020-10-23 20:41:06,509 INFO L226 Difference]: Without dead ends: 238 [2020-10-23 20:41:06,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=169, Invalid=1021, Unknown=0, NotChecked=0, Total=1190 [2020-10-23 20:41:06,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-10-23 20:41:06,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 215. [2020-10-23 20:41:06,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-10-23 20:41:06,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 238 transitions. [2020-10-23 20:41:06,557 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 238 transitions. Word has length 102 [2020-10-23 20:41:06,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:41:06,558 INFO L481 AbstractCegarLoop]: Abstraction has 215 states and 238 transitions. [2020-10-23 20:41:06,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-23 20:41:06,559 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 238 transitions. [2020-10-23 20:41:06,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-23 20:41:06,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:41:06,562 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:41:06,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-23 20:41:06,562 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:41:06,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:41:06,563 INFO L82 PathProgramCache]: Analyzing trace with hash 481129397, now seen corresponding path program 1 times [2020-10-23 20:41:06,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:41:06,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1325619125] [2020-10-23 20:41:06,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:41:06,823 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2020-10-23 20:41:07,225 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-23 20:41:07,499 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:07,500 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:07,500 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:07,501 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:07,501 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:07,501 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:07,502 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:07,502 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:07,545 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:07,548 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:41:07,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:41:07,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:41:07,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:41:07,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-23 20:41:07,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:41:07,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-23 20:41:07,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:41:07,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-23 20:41:07,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:41:07,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-23 20:41:07,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:41:07,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:41:07,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1325619125] [2020-10-23 20:41:07,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:41:07,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-23 20:41:07,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701153682] [2020-10-23 20:41:07,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-23 20:41:07,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:41:07,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-23 20:41:07,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-10-23 20:41:07,881 INFO L87 Difference]: Start difference. First operand 215 states and 238 transitions. Second operand 16 states. [2020-10-23 20:41:10,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:41:10,122 INFO L93 Difference]: Finished difference Result 365 states and 412 transitions. [2020-10-23 20:41:10,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-23 20:41:10,123 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 103 [2020-10-23 20:41:10,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:41:10,126 INFO L225 Difference]: With dead ends: 365 [2020-10-23 20:41:10,126 INFO L226 Difference]: Without dead ends: 250 [2020-10-23 20:41:10,127 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=187, Invalid=1003, Unknown=0, NotChecked=0, Total=1190 [2020-10-23 20:41:10,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-10-23 20:41:10,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 182. [2020-10-23 20:41:10,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-10-23 20:41:10,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 198 transitions. [2020-10-23 20:41:10,161 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 198 transitions. Word has length 103 [2020-10-23 20:41:10,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:41:10,161 INFO L481 AbstractCegarLoop]: Abstraction has 182 states and 198 transitions. [2020-10-23 20:41:10,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-23 20:41:10,161 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 198 transitions. [2020-10-23 20:41:10,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-23 20:41:10,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:41:10,163 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:41:10,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-23 20:41:10,163 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:41:10,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:41:10,164 INFO L82 PathProgramCache]: Analyzing trace with hash -1248000293, now seen corresponding path program 3 times [2020-10-23 20:41:10,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:41:10,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [939989875] [2020-10-23 20:41:10,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:41:10,410 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2020-10-23 20:41:10,584 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-23 20:41:10,761 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-23 20:41:10,928 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-23 20:41:11,096 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-23 20:41:11,398 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2020-10-23 20:41:11,567 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-23 20:41:11,625 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:11,626 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:11,627 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:11,627 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:11,628 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:11,628 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:11,628 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:11,629 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:11,629 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:11,630 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:11,630 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:11,901 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:11,905 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:41:11,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:41:11,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:41:11,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:41:11,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-23 20:41:11,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:41:12,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-23 20:41:12,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:41:12,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-23 20:41:12,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:41:12,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-23 20:41:12,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:41:12,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:41:12,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [939989875] [2020-10-23 20:41:12,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:41:12,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-23 20:41:12,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86331966] [2020-10-23 20:41:12,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-23 20:41:12,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:41:12,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-23 20:41:12,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-23 20:41:12,211 INFO L87 Difference]: Start difference. First operand 182 states and 198 transitions. Second operand 13 states. [2020-10-23 20:41:12,712 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2020-10-23 20:41:13,342 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2020-10-23 20:41:13,478 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2020-10-23 20:41:14,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:41:14,145 INFO L93 Difference]: Finished difference Result 376 states and 428 transitions. [2020-10-23 20:41:14,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-23 20:41:14,146 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 109 [2020-10-23 20:41:14,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:41:14,149 INFO L225 Difference]: With dead ends: 376 [2020-10-23 20:41:14,149 INFO L226 Difference]: Without dead ends: 271 [2020-10-23 20:41:14,150 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=211, Invalid=659, Unknown=0, NotChecked=0, Total=870 [2020-10-23 20:41:14,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-10-23 20:41:14,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 212. [2020-10-23 20:41:14,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-10-23 20:41:14,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 234 transitions. [2020-10-23 20:41:14,203 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 234 transitions. Word has length 109 [2020-10-23 20:41:14,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:41:14,203 INFO L481 AbstractCegarLoop]: Abstraction has 212 states and 234 transitions. [2020-10-23 20:41:14,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-23 20:41:14,203 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 234 transitions. [2020-10-23 20:41:14,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-23 20:41:14,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:41:14,211 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:41:14,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-23 20:41:14,211 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:41:14,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:41:14,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1735393704, now seen corresponding path program 1 times [2020-10-23 20:41:14,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:41:14,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [733433061] [2020-10-23 20:41:14,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:41:14,464 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2020-10-23 20:41:14,636 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-23 20:41:14,809 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-23 20:41:14,974 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-23 20:41:15,150 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-23 20:41:15,439 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2020-10-23 20:41:15,613 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-23 20:41:15,668 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:15,669 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:15,670 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:15,671 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:15,671 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:15,672 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:15,672 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:15,673 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:15,673 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:15,674 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:15,675 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:15,675 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:15,676 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:15,942 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:15,945 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:41:15,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:41:16,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:41:16,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:41:16,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-23 20:41:16,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:41:16,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-23 20:41:16,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:41:16,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-23 20:41:16,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:41:16,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-23 20:41:16,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:41:16,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:41:16,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [733433061] [2020-10-23 20:41:16,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:41:16,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2020-10-23 20:41:16,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592430849] [2020-10-23 20:41:16,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-23 20:41:16,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:41:16,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-23 20:41:16,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2020-10-23 20:41:16,448 INFO L87 Difference]: Start difference. First operand 212 states and 234 transitions. Second operand 20 states. [2020-10-23 20:41:17,002 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2020-10-23 20:41:19,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:41:19,223 INFO L93 Difference]: Finished difference Result 331 states and 389 transitions. [2020-10-23 20:41:19,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-23 20:41:19,224 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 111 [2020-10-23 20:41:19,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:41:19,227 INFO L225 Difference]: With dead ends: 331 [2020-10-23 20:41:19,227 INFO L226 Difference]: Without dead ends: 323 [2020-10-23 20:41:19,229 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=206, Invalid=1434, Unknown=0, NotChecked=0, Total=1640 [2020-10-23 20:41:19,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-10-23 20:41:19,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 262. [2020-10-23 20:41:19,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-10-23 20:41:19,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 300 transitions. [2020-10-23 20:41:19,293 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 300 transitions. Word has length 111 [2020-10-23 20:41:19,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:41:19,293 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 300 transitions. [2020-10-23 20:41:19,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-23 20:41:19,294 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 300 transitions. [2020-10-23 20:41:19,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-23 20:41:19,295 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:41:19,296 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:41:19,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-23 20:41:19,296 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:41:19,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:41:19,296 INFO L82 PathProgramCache]: Analyzing trace with hash 294427059, now seen corresponding path program 2 times [2020-10-23 20:41:19,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:41:19,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2126768607] [2020-10-23 20:41:19,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:41:19,540 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2020-10-23 20:41:19,700 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-23 20:41:19,868 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-23 20:41:20,037 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-23 20:41:20,205 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-23 20:41:20,493 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2020-10-23 20:41:20,663 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-23 20:41:20,718 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:20,719 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:20,720 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:20,721 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:20,721 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:20,722 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:20,723 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:20,723 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:20,724 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:20,724 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:20,725 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:20,725 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:20,726 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:20,996 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:20,999 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:41:21,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:41:21,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:41:21,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:41:21,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-23 20:41:21,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:41:21,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-23 20:41:21,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:41:21,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-23 20:41:21,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:41:21,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-23 20:41:21,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:41:21,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:41:21,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2126768607] [2020-10-23 20:41:21,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:41:21,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2020-10-23 20:41:21,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278483593] [2020-10-23 20:41:21,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-23 20:41:21,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:41:21,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-23 20:41:21,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=461, Unknown=0, NotChecked=0, Total=506 [2020-10-23 20:41:21,720 INFO L87 Difference]: Start difference. First operand 262 states and 300 transitions. Second operand 23 states. [2020-10-23 20:41:24,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:41:24,699 INFO L93 Difference]: Finished difference Result 347 states and 407 transitions. [2020-10-23 20:41:24,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-23 20:41:24,700 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 118 [2020-10-23 20:41:24,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:41:24,703 INFO L225 Difference]: With dead ends: 347 [2020-10-23 20:41:24,704 INFO L226 Difference]: Without dead ends: 335 [2020-10-23 20:41:24,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=172, Invalid=1720, Unknown=0, NotChecked=0, Total=1892 [2020-10-23 20:41:24,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-10-23 20:41:24,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 303. [2020-10-23 20:41:24,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2020-10-23 20:41:24,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 352 transitions. [2020-10-23 20:41:24,771 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 352 transitions. Word has length 118 [2020-10-23 20:41:24,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:41:24,772 INFO L481 AbstractCegarLoop]: Abstraction has 303 states and 352 transitions. [2020-10-23 20:41:24,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-23 20:41:24,772 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 352 transitions. [2020-10-23 20:41:24,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-23 20:41:24,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:41:24,775 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:41:24,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-23 20:41:24,775 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:41:24,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:41:24,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1458094782, now seen corresponding path program 2 times [2020-10-23 20:41:24,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:41:24,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1788831876] [2020-10-23 20:41:24,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:41:25,035 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2020-10-23 20:41:25,196 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-23 20:41:26,384 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 219 DAG size of output: 183 [2020-10-23 20:41:26,453 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:41:26,679 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-23 20:41:26,680 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:41:26,693 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:41:26,694 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:242, output treesize:243 [2020-10-23 20:41:26,923 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-23 20:41:27,045 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-23 20:41:27,217 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-23 20:41:28,398 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 209 DAG size of output: 182 [2020-10-23 20:41:28,451 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:41:28,682 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-23 20:41:28,682 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:41:28,686 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:41:28,687 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:242, output treesize:243 [2020-10-23 20:41:28,904 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-23 20:41:29,019 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-23 20:41:29,316 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2020-10-23 20:41:29,490 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-23 20:41:30,706 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 219 DAG size of output: 183 [2020-10-23 20:41:30,741 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:41:30,968 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-23 20:41:30,969 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:41:30,972 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:41:30,972 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:242, output treesize:243 [2020-10-23 20:41:31,194 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-23 20:41:31,197 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:31,197 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:31,198 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:31,199 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:31,199 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:31,200 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:31,200 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:31,201 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:31,201 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:31,202 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:31,202 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:31,203 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:31,203 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:31,473 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:31,477 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:41:31,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:41:31,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:41:31,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:41:31,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-23 20:41:31,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:41:31,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-23 20:41:31,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:41:31,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-23 20:41:31,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:41:31,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:41:31,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:41:31,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:41:31,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1788831876] [2020-10-23 20:41:31,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:41:31,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-23 20:41:31,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508698172] [2020-10-23 20:41:31,840 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-23 20:41:31,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:41:31,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-23 20:41:31,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-10-23 20:41:31,841 INFO L87 Difference]: Start difference. First operand 303 states and 352 transitions. Second operand 15 states. [2020-10-23 20:41:32,389 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2020-10-23 20:41:33,332 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2020-10-23 20:41:34,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:41:34,154 INFO L93 Difference]: Finished difference Result 548 states and 656 transitions. [2020-10-23 20:41:34,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-23 20:41:34,155 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 119 [2020-10-23 20:41:34,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:41:34,158 INFO L225 Difference]: With dead ends: 548 [2020-10-23 20:41:34,158 INFO L226 Difference]: Without dead ends: 411 [2020-10-23 20:41:34,163 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=262, Invalid=998, Unknown=0, NotChecked=0, Total=1260 [2020-10-23 20:41:34,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2020-10-23 20:41:34,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 327. [2020-10-23 20:41:34,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2020-10-23 20:41:34,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 386 transitions. [2020-10-23 20:41:34,248 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 386 transitions. Word has length 119 [2020-10-23 20:41:34,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:41:34,248 INFO L481 AbstractCegarLoop]: Abstraction has 327 states and 386 transitions. [2020-10-23 20:41:34,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-23 20:41:34,249 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 386 transitions. [2020-10-23 20:41:34,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-23 20:41:34,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:41:34,251 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:41:34,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-23 20:41:34,252 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:41:34,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:41:34,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1478120642, now seen corresponding path program 3 times [2020-10-23 20:41:34,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:41:34,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1370078473] [2020-10-23 20:41:34,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:41:34,513 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2020-10-23 20:41:34,743 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-23 20:41:34,914 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-23 20:41:35,087 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-23 20:41:35,507 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-23 20:41:35,880 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2020-10-23 20:41:36,051 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-23 20:41:36,106 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:36,107 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:36,108 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:36,109 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:36,109 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:36,110 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:36,110 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:36,111 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:36,111 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:36,111 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:36,112 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:36,382 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:36,385 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:41:36,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:41:36,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:41:36,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:41:36,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-23 20:41:36,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:41:36,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-23 20:41:36,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:41:36,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-23 20:41:36,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:41:36,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 20:41:36,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:41:36,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:41:36,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1370078473] [2020-10-23 20:41:36,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:41:36,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-23 20:41:36,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732309482] [2020-10-23 20:41:36,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-23 20:41:36,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:41:36,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-23 20:41:36,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-23 20:41:36,685 INFO L87 Difference]: Start difference. First operand 327 states and 386 transitions. Second operand 15 states. [2020-10-23 20:41:38,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:41:38,197 INFO L93 Difference]: Finished difference Result 518 states and 603 transitions. [2020-10-23 20:41:38,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-23 20:41:38,205 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 119 [2020-10-23 20:41:38,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:41:38,209 INFO L225 Difference]: With dead ends: 518 [2020-10-23 20:41:38,210 INFO L226 Difference]: Without dead ends: 341 [2020-10-23 20:41:38,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=172, Invalid=820, Unknown=0, NotChecked=0, Total=992 [2020-10-23 20:41:38,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2020-10-23 20:41:38,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 321. [2020-10-23 20:41:38,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2020-10-23 20:41:38,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 374 transitions. [2020-10-23 20:41:38,282 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 374 transitions. Word has length 119 [2020-10-23 20:41:38,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:41:38,282 INFO L481 AbstractCegarLoop]: Abstraction has 321 states and 374 transitions. [2020-10-23 20:41:38,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-23 20:41:38,282 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 374 transitions. [2020-10-23 20:41:38,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-23 20:41:38,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:41:38,285 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:41:38,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-23 20:41:38,285 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:41:38,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:41:38,286 INFO L82 PathProgramCache]: Analyzing trace with hash 390448671, now seen corresponding path program 1 times [2020-10-23 20:41:38,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:41:38,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1814606299] [2020-10-23 20:41:38,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:41:38,537 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2020-10-23 20:41:39,943 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 219 DAG size of output: 183 [2020-10-23 20:41:39,977 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:41:40,196 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-23 20:41:40,197 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:41:40,200 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:41:40,200 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:242, output treesize:243 [2020-10-23 20:41:40,420 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-23 20:41:40,545 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-23 20:41:40,713 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-23 20:41:41,882 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 209 DAG size of output: 180 [2020-10-23 20:41:41,907 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:41:42,121 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-23 20:41:42,121 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:41:42,123 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:41:42,124 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:236, output treesize:237 [2020-10-23 20:41:42,336 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-23 20:41:42,455 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-23 20:41:42,759 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2020-10-23 20:41:42,932 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-23 20:41:44,203 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 219 DAG size of output: 183 [2020-10-23 20:41:44,231 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 20:41:44,462 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-23 20:41:44,464 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 20:41:44,466 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-23 20:41:44,467 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:242, output treesize:243 [2020-10-23 20:41:44,695 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-23 20:41:44,699 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:44,700 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:44,701 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:44,701 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:44,702 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:44,702 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:44,703 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:44,703 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:44,704 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:44,704 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:44,705 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:44,705 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:44,706 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:44,978 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 20:41:44,981 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:41:44,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:41:44,998 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:41:45,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:41:45,016 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:41:45,063 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 20:41:45,063 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 20:41:45,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-23 20:41:45,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:41:45 BoogieIcfgContainer [2020-10-23 20:41:45,086 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:41:45,088 INFO L168 Benchmark]: Toolchain (without parser) took 59539.61 ms. Allocated memory was 151.0 MB in the beginning and 377.5 MB in the end (delta: 226.5 MB). Free memory was 126.5 MB in the beginning and 187.9 MB in the end (delta: -61.4 MB). Peak memory consumption was 165.5 MB. Max. memory is 8.0 GB. [2020-10-23 20:41:45,088 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory was 124.8 MB in the beginning and 124.5 MB in the end (delta: 214.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:41:45,089 INFO L168 Benchmark]: CACSL2BoogieTranslator took 540.78 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 102.1 MB in the end (delta: 23.8 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:41:45,089 INFO L168 Benchmark]: Boogie Preprocessor took 74.38 ms. Allocated memory is still 151.0 MB. Free memory was 102.1 MB in the beginning and 99.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:41:45,090 INFO L168 Benchmark]: RCFGBuilder took 1042.84 ms. Allocated memory is still 151.0 MB. Free memory was 99.2 MB in the beginning and 79.9 MB in the end (delta: 19.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 8.0 GB. [2020-10-23 20:41:45,090 INFO L168 Benchmark]: TraceAbstraction took 57870.45 ms. Allocated memory was 151.0 MB in the beginning and 377.5 MB in the end (delta: 226.5 MB). Free memory was 79.4 MB in the beginning and 187.9 MB in the end (delta: -108.4 MB). Peak memory consumption was 117.9 MB. Max. memory is 8.0 GB. [2020-10-23 20:41:45,092 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory was 124.8 MB in the beginning and 124.5 MB in the end (delta: 214.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 540.78 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 102.1 MB in the end (delta: 23.8 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 74.38 ms. Allocated memory is still 151.0 MB. Free memory was 102.1 MB in the beginning and 99.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1042.84 ms. Allocated memory is still 151.0 MB. Free memory was 99.2 MB in the beginning and 79.9 MB in the end (delta: 19.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 57870.45 ms. Allocated memory was 151.0 MB in the beginning and 377.5 MB in the end (delta: 226.5 MB). Free memory was 79.4 MB in the beginning and 187.9 MB in the end (delta: -108.4 MB). Peak memory consumption was 117.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L627] CALL, EXPR _get_nondet_int(2, 5) [L620] int len = from; [L621] len < until && __VERIFIER_nondet_int() [L621] len < until && __VERIFIER_nondet_int() [L621] COND FALSE !(len < until && __VERIFIER_nondet_int()) [L624] return len; [L627] RET, EXPR _get_nondet_int(2, 5) [L627] const int len = _get_nondet_int(2, 5); [L628] SLL s = sll_create(len); [L628] CALL, EXPR sll_create(len) [L575] SLL head = ((void *)0); [L576] EXPR len-- [L576] COND TRUE len-- > 0 [L577] SLL new_head = (SLL) malloc(sizeof(struct node)); [L578] COND FALSE !(((void *)0) == new_head) [L581] new_head->next = head [L582] head = new_head [L576] EXPR len-- [L576] COND TRUE len-- > 0 [L577] SLL new_head = (SLL) malloc(sizeof(struct node)); [L578] COND FALSE !(((void *)0) == new_head) [L581] new_head->next = head [L582] head = new_head [L576] EXPR len-- [L576] COND FALSE !(len-- > 0) [L584] return head; [L628] RET, EXPR sll_create(len) [L628] SLL s = sll_create(len); [L629] CALL, EXPR _get_nondet_int(0, len - 1) [L620] int len = from; [L621] len < until && __VERIFIER_nondet_int() [L621] len < until && __VERIFIER_nondet_int() [L621] COND TRUE len < until && __VERIFIER_nondet_int() [L622] len++ [L621] len < until && __VERIFIER_nondet_int() [L621] COND FALSE !(len < until && __VERIFIER_nondet_int()) [L624] return len; [L629] RET, EXPR _get_nondet_int(0, len - 1) [L629] const int k = _get_nondet_int(0, len - 1); [L630] int i = 0; [L631] i < k && __VERIFIER_nondet_int() [L631] i < k && __VERIFIER_nondet_int() [L631] COND FALSE !(i < k && __VERIFIER_nondet_int()) [L636] EXPR \read(s) [L636] CALL, EXPR sll_length(s) [L587] int len = 0; [L588] COND TRUE \read(head) [L589] len++ [L590] EXPR head->next [L590] head = head->next [L588] COND TRUE \read(head) [L589] len++ [L590] EXPR head->next [L590] head = head->next [L588] COND FALSE !(\read(head)) [L592] return len; [L636] RET, EXPR sll_length(s) [L636] COND TRUE k + len != sll_length(s) [L641] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "sll_nondet_insert-1.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 163 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 57.7s, OverallIterations: 15, TraceHistogramMax: 3, AutomataDifference: 26.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1957 SDtfs, 4326 SDslu, 11631 SDs, 0 SdLazy, 12781 SolverSat, 581 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 586 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 394 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1757 ImplicationChecksByTransitivity, 14.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=327occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 14 MinimizatonAttempts, 629 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...